摘要
层间接触状态对路面结构力学性能和使用寿命有重要影响,为了研究沥青路面结构在车辆荷载作用下层间结合情况,以某改扩建沥青路面层间接触状态检测工程为依托,基于三维探地雷达无损检测技术提出了沥青路面层间接触状态评价方法,并对该改扩建工程沥青路面的层间结合情况以及层间接触状态的衰变规律进行了分析.结果表明:层间界面反射波振幅峰值大小可较好描述沥青路面层间接触状态;各车道层间界面振幅服从对数正态分布;振幅峰值小于1.0 mm(层间接触良好)的区域占整体区域的70%左右;振幅峰值大于2.0 mm(层间接触较差)的区域占不足3%.检测结果及数据分析表明,检测路段行车道和超车道的层间结合情况较应急车道好,可为沥青路面层间接触状态评价提供理论及技术支撑.
The bonding status between asphalt pavement layers has an important influence on the mechanical properties and service life of the pavement.To study the inter-layer bonding status of asphalt pavement under vehicle load,an approach based on 3D ground penetrating radar(GPR)technology was used to estimate the bonding status between asphalt pavement layers.The approach is able to analyze the inter-layer bonding status of the asphalt pavement.It is found that the peak amplitude of the reflected radar wave is able to describe the contact state between asphalt pavement layers;the amplitude reflected by the interface obeys the log-normal distribution;the peak amplitude less than 1.0 mm(good interlay bonding)accounts for 70%of the total area;and areas with amplitude values greater than 2.0 mm(poor interlayer bonding)account for less than 3%.Results show that the bonding status of the driving lane and the passing lane are better than that of the emergency lane.Furthermore,the investigation is able to provide necessary theoretical and technical support for pavement interlayer bonding status evaluation.
作者
王大为
吕浩天
汤伏蛟
叶呈森
刘鹏飞
WANG Dawei;LU Haotian;TANG Fujiao;YE Chengsen;LIU Pengfei(School of Transportation Science and Engineering,Harbin Institute of Technology,Harbin 150090,China;Institute of Highway Engineering,RWTH Aachen University,Aachen 52074,Germany)
出处
《北京工业大学学报》
CAS
CSCD
北大核心
2022年第6期572-579,共8页
Journal of Beijing University of Technology
基金
国家重点研发计划资助项目(2019YFE0116300)
黑龙江省自然科学基金资助项目(JJ2020ZD0015)。
关键词
探地雷达(GPR)
沥青路面
无损检测
力学性能
层间接触状态
反射振幅
ground penetrating radar(GPR)
asphalt pavement
nondestructive detection
mechanical property
interlayer bonding status
radar reflecting amplitude
作者简介
王大为(1981-),男,教授,博士生导师,主要从事道路工程方面的研究,E-mail:dawei.wang@hit.edu.cn;通信作者:汤伏蛟(1990-),男,讲师,主要从事岩土工程方面的研究,E-mail:fujiao.tang@hit.edu.cn。
